Sinopec Oil Company Information 
english.sinopec.com/ 
Sinopec Oil Products Company. Sinopec is the largest oil company in the world, as well as the largest petroleum refiner and oil products producer, with 1.6 million barrels per day - The World's Largest Oil Company... 
www.forbes.com/.../23-sinopec-1-6-million-barrels-per-day-3/ 
Forbes 
Sinopec is biggest oil refiner. This year Sinopec cut a sweeping shale venture with Devon Energy. The World's 25 Biggest Oil Companies. 
Sinopec Oil | Largest Oil Company in the World | Fortune - 2015 ranking of the global top 10 oil and gas companies based on revenue (in billion U.S. dollars)This statistic shows the 2015 ranking https://en.wikipedia.org/wiki/List_of_largest_oil_and_gas_companies_by_revenue

Sinopec ranks behind Wal-Mart Stores (1st) and ahead of Royal Dutch Shell (3rd), China National Petroleum (4th) and Exxon Mobil (5th). List of largest companies in the world as of 2015

https://www.addaxpetroleum.com/about-us/news/178-sinopec-second-in-fortune-global-500-ranking

The Sinopec Group, Addax Petroleum’s shareholder, moved up a rank to replace Royal Dutch Shell as the world’s second largest company in 2015.

http://fortune.com/global500/sinopec-group-2/